Dumping car



8, 1933. ..Q CARLSSON 1,921,558

DUMPING CAR Filed Dec. 3, 1930 3 Sheets-Sheet l z'zw'entor,"

Patented Aug. 8, 1933 NT) O FICE. T

DUMPING CAR 'Johan Carlsson, Landskrona, Sweden .able kind to support apair of interspaced'groov -ed.

When the in h, drumisrota eaai i ia I Application December a, 1930,Serial No. 499,833, and in Sweden December 17, 1929 5 'Claims. (01.2985-21) My present invention refers to improvements disc pu1leys6rotatably mounted on substantial in dumping cars, especially motorlorries, in which 1y horizontal shafts positioned transversely and.

theload carrying platform, for the purpose of substantiallyperpendicularly to the direction of permitting a'dumping towards eitherof its two length of the car. By means of a rearmost'trans- 5 sides orrearwardly, at its forward end is supverse beamconstruction '7' of anysuitable kind, ported by" two longitudinal pivot pins in fixed the fixedcar framing4 serves, also }as a support bearings, one at each side ofthe car, and at its for another pair ofinterspaced grooved discipul rearend by two similar pivot pins mounted in leys 8, the shafts of which areapproximately r )7 bearings turnable around a transverse axis, the allelto the direction of length of the car. The- 10 dumping device'beingdriven by means of a winch pulleys 9 are not fixedly supported,,howevenas and wire arrangement forming the subject mat may be the casein respect of the pulleys ,6, but ter of the invention. f their shaftsby means of fork-shaped hinge. con- The invention is illustrated in theacoompanynections 9 are tiltably mounted so that the pill? I ingdiagrammatical drawings in which, leys are able to swing substantiallyin averti- Fig. 1 shows the rear'end of a motor lorry pro- "cal plane.It will be-understood from thedraw- 59;

vided with the dumping means according to the ing (Fig. 2) that thepulleys 9 are positioned invention and seen inside elevation partly in amanner so that their outer edges .touch a ver section, 2 Q w h ticalplanethrough the. corresponding pulley. 6.

, Fig. 2is a'plan viewof Fig; 1', the platform being The under side ofthe platform 1 is provided removed for the sake of clearness andindicated with a pair; of interspaced and depending hanger in dotanddash lines," a 1- frameslO each supporting atgits'lower end a" Fig.3- shows across section of Fig. 1 at the grooved disc pulley'll, suchpulleysbeing mount-. line A-B and viewed in the direction of the aredonshafts positioned substantially perpendicf j ularto the direction oflength of the caryand Fig. 4 is a side elevation of abrakedevice'forrnwhen the platform is in horizontal position they ingpart of the construction, the .end coverpn the take a positionsubstantially in the samevertical brake drum being removed formaking theinterior plane as the corresponding pulley.6. The pulleys parts visible;1 11 ought tobe hingedly mounted, however, in

I Fig; 5 is alongitudinal section of-the' brake order topermit themtotilt-or swing in a vertidevice shown in Fig. 4', and} Icalplanesubstantially perpendicular to the plane Fig. 6 a longitudinalsection of the change of the'swinging movement of 'thepulleysli.speedgear box as modified for-the purposebi LIn rront of theforemostbeam construction applicability according to the invention. r 5,"the;carframing 4 supports a shaft 12"mountr According v drawings, the loadarrying ed in fixed bearings and provided with ,a winch;

Platform 1 Supported by a e-framing, drum 13. Atone .of, its ends ametal wire-14 construction and rests on'four pivot pins-2 posiis fixedto the said drum 13 and carried in zigtioned parallel to-the directionof length of the .zag rearwardly over thepulleys 6, 11, 3 t,- th car anda a y Slidable in' their bearings; ch foneside of the car, thereaftertransversely to v 40 P v P1115 being arranged in Pa rs at each id'theoppositepulley 8, and thence forwardly'over of the car and dja n toh ed es of the platthepulleys 11, 6 at the opposite side of the car.form.-The'two rea mQ t Bil/0111311152 areimountr The otherjend of thewire may also be affixed ed in a? transvers'esha tB upp d b the de tothe drum 13,-01 else it may be connected with f Chassis the P3 BYWlthdmwal o ca fixed'pointof the car framing-Hence, it will 45 the twoforemost plvot 1 platmmmay 1 be understood that the wire will take aposition be p rearward, by tmmng arolmd as shownin Fig. 1 in comparisonpwith Fig. 2,

shaft and'by'wlthdrawal of the two pm and a rota ion of the winch drum13"wi11have at one of the platform sides, the platform may -w t th 1. rv

be dumped toward the opposite side-The 'con- 5 8 as ewllrei V 5structional means thusdescribed' maybe con- Y P?e l e i m? 1 sidered tobe knownper se, and they form. no P the E lseppareni WWW???characteristicalfeature of the invention. 7 additlonal 6 pulleys;thanW95 descnbed a Thefixed car frame has'the referencei l 'in o be u i u ne Wi T lpf the drawings, and it serves by means of a fore necessity, ieto c s c io a bst cl i g most transverse beamconstruction'5 of anysuit? ins P O t en er re Qf'the stress is effected in the wire, asaforesaid, and one or both ends of the wire travel in the direction ofthe. drum from either or both of the pulleys 6. Thereby the pulleys 11will be forced j upwardly supported by the pulleyso and 8, so

that a dumping movement by means of the hanger frames 12 is transmittedto the platform 1 in amanner easily understood by those skilled in theart, and-the direction of the dumping movement will be determined by thepins 2, 2

Irrespective of withdrawn from their bearings. the direction of thedumping, the tensional stress in the wire 14 will be uniform. throughoutthe whole length of the-same.

Naturally, it is favourable if the diiierent turns of the wire wound up'onthe drum 13 are placed of the framing, one single drum of the last-,mentioned kind is needed only. It is obvious, however, thatirrespective of the direction of the dumping movement the pulleys 8 willbe swung :upwards in a clockwise direction as viewed in Fig. 1, whendumping.

The rotational movement of the drum 13 is preferably transmitted to thesame by means of a-bevelled gear 15, one wheel of. which is afiixedtothe drum shaft, the other being aflixed to a driving shaft 16 adaptedto be rotated by the motor car engine by theintermediary of'the commonchange speed gear. The driving shaft 16 is preferably mounted along theGarden-shaft 1'7, which in a common manner is connected with the changespeed gear (Fig. 6). 1 The change speed gear is constructed in-theconventional manner and provided with aslid able shaft 18 supporting anumber of gear wheels In .a supple- 1 for the different speeds ahead.mentary casing affixed to the gear box is mounted an additional gearwheel 19 afiixed to the shaft 16 in opposition to the gear wheel on theshaft 17 corresponding to the lowest and by means of. a common gearshift handle (not shown). the wheel 19 may be thrown inand out just in'the same manner as the other gear wheels.

. In theposition of the gears shown in Fig. 6, the

wheels .are inte meshing' for a simultaneous dumping and forward driveatlow speed, which possibility is also at hand due'to the constructiondescribed. In order to avoid undue stresses on the bearings, the shaft16 ough tobe provided with a couple of. universal joints 20 (one ofwhich is shown in the drawings only);

. The manner in which the dumping movement.

is to be performed will thus be understood from the foregoing, and in adumped position the. platform is intended to be loclredby means of apawl device shown in s and 5. This pawl device consists of a.toothedwheel .2-1 affixed to the shaf 16 and surroundedby a brake drum22 rotatably mountedon the same shaft, such brake drum by means of apivot pin 23 supporting a pawl 24 which is spring-actuated so as perma-'nently 'to'tend to go into engagement with the toothed wheel .21. Thebrake drum 22 is surrounded by a brake strap or a aof brake shoes 25which-by suitable means (not shown) may betightened' around the drum forthe purpose of braking the same. Normally the drum 22 shall be kepteffectively braked. v

When a dumping is to be performed, the shaft 16 is rotated in thedirection of the arrow shown inFig. 4, and thereby the pawl 24 mayfreely slide back'over the teeth on the wheel21. As soon as the rotationof the winch drum 13 by means of the shaft 16 has ceased, the pawl 24will go into engagement with the toothed wheel 21, and sincethe brakedrum 22 is braked, as aforesaid, the platform will be held in theinclination caused by the dumping movement irrespective of the angle ofsuch inclination. Thereafter, if the braking effect on the drum 22 ismanually relieved, the pawl 24 will loose its positive support, and theweight of the load platform 1 will cause a return movement of theplatform in opposite direction to the dumping movement effected. It willalso be understood that the said return movement-by re-applicationdesired before the platform has arrived in its horizontal position.-Themeans for manual control of the brake 25 may be mounted in a handyposition adjacent to the drivers seat, and the shifting handle for thegear 19 ought'naturally also to be given a similar position;

- It will be understood, that if the driving means, when dumping, arekept working too long, the V-shaped portions of the wire running. aroundthe pulleys 11 will at first be stretched taut and thereafter they willbe torn off, in case the drivingv device is not disengaged in duetime... In order to prevent this fatality andto provide for an automaticdisengagement. of the driving means, the rear transverse beamconstruction '7 supports a plate 28 hingedly connected with the beamconstruction preferably on the same shaft 9 as the pulleys 8, such plateextending in opposition to the pulley shafts, so'that the plate.

will be tilted upwardly simultaneously with either or both of saidpulleys. By means of a wire con- -nection 29 running over suitable guidepulleys or rolls, the plate 28 is connected with the conventional clutchpedal (not shown) positione adjacent tothe. drivers seat and adapted fordisconnection of the engine from the change speed gear, i. e. from thedriving shaft 17, Hence, when the plate '28 by means of the pulleys 8has been turned up intoacertain predetermined position,'it will cause a.disengagement ofthe engine just in the same manner as if thisdisengagementhad'been manually performed by actuation of the clutchpedal. Whenthe engine is disengaged, the dumping means will be stopped,

and the dumping movement is automatically interruptedwhen apredetermined angle of inclination has been reached. Therefore the wire"14 cannot be torn off, and besidesthe advantage is gained that thedumping movement may continue at: a. considerable speed until themaximal dumping angle is reached, the practical result hereof being thata load, for instance gravel, may be actually thrown off. from theplatformsubstantiallyin the same manner as when unloading the lorry bymeans ofmanual shovelling.

The advantage hereof will be understood when considering that the mainbulk of the load will be removed a relatively greater distance fromthe'car and not permitted to drop down-immediately adjacentto and aroundthe wheels, which otherwise frequently occurs when dumping towardseither of the sides of the car, and involves the disadvantage thattherwheels must in part pass through the "dumped load when driving ofthe brake 25, may be stopped at any angle different transmission means.

away with the empty car, or else the portions of the load dumped inadvance of the wheels must be manually removed before driving away.

On the other hand the car may also be driven ahead simultaneously withthe dumping or unloading, provided that the maximal dumping angle is notreached. For instance, when dumping rearwardly, the dumping movement bydisengagement of the gear 19 is interrupted when the platform takes acertain inclination, and the car is driven ahead, whereby the load inthe form of a continuous layer will be distributed behind the car.Hence, in spite of the simplicity of construction, the possibilities forunloading the car are the greatest possible, and the constructionalparts of the dumping device cannot be damaged by rough handling orcarelessness in manipulation.v

Finally it is to be understood that the invention is not limited to theconstructional particulars described above for the sakeof explanation,but it may be varied in many respects so as to suit different types oflorries or freight cars;

in general, this being especially true in respect to the means forsupporting and bearing of the be desired to distribute the tiltingaction on the platform in more than one or two points, for instance incase of very large lorries, such distribution will be possible if asecond pair of hanger frames, similar to. the hanger frames 10, aremounted in advance of the latter and the wire carried around pulleys onsaid additional hanger frames when leaving the pulleys 6 instead ofrunning directly to the winch drum from the last mentioned pulleys;

What I claim and desire to Patent is:

1. In a dumping vehicle of the character described, an under frame, aloadplatform tiltably supported by said frame, bearing means for thetilting movement of said frame and adapted to permit the tilting of thesame towards either of its sides and backwardly according 'to will, aforesecure by Letters most transverse beam construction rigidly sup,

ported by the under frame, a pair of interspaced wire pulleys rotatablymounted on said beam construction in a plane substantially parallel tothe direction of length of the vehicle, a rearmost transverse beamconstruction rigidly supported by the under frame a pair of interspacedwire pulleys hingedly supported by this second beam constructionandrotatable in a plane substantially transverse to the direction oflength of the vehicle, a pair of hanger frames depending from thetiltable platform in a position between the transverse beamconstructions, a wire pulley mounted on each of the depending hangerframes in a position below the pulleys carried by the said beamconstructions, a wire passing in'zigzag over the pulleys at one side ofthe vehicle, thereafter transversely over the pulleys on the rearmostransverse beam, zag over the pulleys at the other side of the vehicle,andmeans for causing a tension in the wire" so as to make it to travelaround the pulleys for the purpose of effecting the dumpingmovemnt. 2.In a dumping vehicle, according to claim 1, the additional feature thatthe means for causing the travel of the wire consists of a wincharrangement adapted to be driven from the engine of' the vehicle. a 3.In a dumping vehicle according to claim 3 l, the additional feature thatthe means for causing the travel of the wire consists of a winch ar- Incase it should,

and thence in zig rangement adapted to be driven from the engine of thevehicle by the intermediary of the change speed gear, thereon and bymeans of a disconnectable gear means adapted to be manually controlledfor the purpose of throwing in or out the driving connection accordingto will.

4. In a dumping vehicle of the character described; an under frame, aload platform tiltably supported by said frame, bearing meansfor thetilting movement of said frame and adapted to permit the tilting of thesame towards either of its sides and backwardly according to will, aforemost transverse beam construction rigidly supported by the underframe, a 'pair' of interspaced wire pulleys rotatably mounted on saidbeam, construction in a'plane substantially parallel tothe direction oflength of the vehicle, a rearmost transverse beam constructionrigidlysupported by the under frame, a pair of interspaced wire pulleyshingedly supported by this second beam construction and rotatable in aplane substantially transverse to the direction of length of thevehicle, a pair of hanger frame's'de'pending from the tiltable platformin a position between i "the transverse beam constructions, a wirepulley mounted on each of the depending hanger frames in a positionbelow the pulleys carried by the said beam constructions, a wire passingin zig-zag over the pulleys at one side ofthe vehicle, thereaftertransversely over the pulleys, on the rearmost transverse beam, andthence in zig-zag over the pulleys at the other .side of the vehicle,winch means disconnectably connected with the motorv car engine andadapted for causing a travelof the wire around the pulleys, and meansfor auto-' matically disconnecting the connection with the engine whenthe tilting movement of the vplat form has proceeded to a predeterminedmaximal angle.

5. In a dumping vehicle of the character'described, an under frame, aload platform tiltably supported by said frame, bearing means for thetilting movement of said frame and adapted to permit the tilting, of thesame towards eitherof its sidesfand backwardly according to will, aforemosttransverse beam construction rigidly supported by the underframe, a pair of interspaced" j wire pulleys rotatablymounted-onsaidbeamconstruction in a plane substantially parallel to the 1direction of length of the vehicle, a rearmost transverse beamconstruction rigidly supported by the under frame, .a pair ofinterspaced wire" pulleys hingedly supported by this second beamconstruction and rotatable in a: plane substantially transverse tothedirection of length of the so. i

vehicle, a pair of hange'rf'rames, depending from the tiltable platformin a' position between the transverse beam constructions, a wire pulleymounted on each of the depending hanger frames in a position below thepulleys carriedb'ythe I said beam constructions, a wire passing inzigzag over the pulleys at one-side of the vehicle,

thereafter transversely over the pulleys on the 'rearmost transversebeam, and thence in zig-zag over the pulleys at the otherside' of thevehicle,

winch means connected with the wire andjd adapted to cause it to travelaround the pulleys,

intermediate transmission means ,di'sconnectably' connecting said winchmeanswvith-the change speed gear of the vehicle, and an unidirectionalbraking-means acting on the said intermediate transmission and adaptednormally to prevent its return rotation in a direction. opposite to therotation caused by the engine. i orr N cAR sso

